//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

// <algorithm>

// template<class RandomAccessIterator, class UniformRandomNumberGenerator>
//     void shuffle(RandomAccessIterator first, RandomAccessIterator last,
//                  UniformRandomNumberGenerator& g);

#include <cuda/std/__random_>
#include <cuda/std/algorithm>
#include <cuda/std/cassert>
#include <cuda/std/utility>

#include "test_macros.h"

int main(int, char**)
{
  int ia[]          = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
  int ia1[]         = {2, 7, 1, 4, 3, 6, 5, 10, 9, 8};
  int ia2[]         = {1, 8, 3, 4, 6, 9, 5, 7, 2, 10};
  const unsigned sa = sizeof(ia) / sizeof(ia[0]);
  cuda::std::minstd_rand g;
  cuda::std::shuffle(ia, ia + sa, g);
  assert(cuda::std::equal(ia, ia + sa, ia1));
  assert(cuda::std::is_permutation(ia, ia + sa, ia1));
  cuda::std::shuffle(ia, ia + sa, cuda::std::move(g));
  assert(cuda::std::equal(ia, ia + sa, ia2));
  assert(cuda::std::is_permutation(ia, ia + sa, ia2));

  return 0;
}
